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Finding the Fourth Proportional to 417,070.86, 625,510.31 and 248,638.65

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Solution

The fourth proportional to 417,070.86, 625,510.31 and 248,638.65 is: 372,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,070.86 : 625,510.31 = 248,638.65 : x
  2. Step 2: Convert to fraction form
    417,070.86/625,510.31 = 248,638.65/x
  3. Step 3: Cross multiply
    417,070.86x = 625,510.31 × 248,638.65
  4. Step 4: Simplify right side
    417,070.86x = 155,526,037,796.29
  5. Step 5: Solve for x
    x = 155,526,037,796.29/417,070.86
  6. Step 6: Final answer
    x = 372,900.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.